Sony A7R IV vs Sony A100

Its time to look more in depth at the Sony A7R IV and Sony A100, one is a Pro Mirrorless and the other is a Entry-Level DSLR and they are both designed by Sony. There exists a sizeable gap among the resolutions of the A7R IV (61MP) and A100 (10MP) and the A7R IV (Full frame) and A100 (APS-C) provide different sensor sizes.

Photography Glossary

The A7R IV was released 13 years after the A100 which is a fairly large gap as far as camera technology is concerned. Each of the cameras feature different body design with the Sony A7R IV being a SLR-style mirrorless camera and the Sony A100 being a Compact SLR camera.

Before getting right into a detailed comparison, here is a concise summary of how the A7R IV grades against the A100 in regards to portability, imaging, features and an overall mark.

Below is a sample of the gallery pics for Sony Alpha A7R IV and Sony Alpha DSLR-A100. The complete galleries are available at Sony A7R IV Gallery and Sony A100 Gallery.

If you're intending to travel with your camera frequently, you have to take into account its weight and proportions. The Sony A7R IV has external measurements of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") having a weight of 665 grams (1.47 lbs) while the Sony A100 has measurements of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") accompanied by a weight of 638 grams (1.41 lbs).

Look at the Sony A7R IV and Sony A100 in the latest Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you have chosen at that time. The following is a front view over all size comparison of the A7R IV vs the A100.

Considering dimensions and weight, the portability rating of the A7R IV and A100 is 62 and 64 respectively.

Quite often, it is very hard to visualize the difference in sensor dimensions purely by going through a spec sheet. The pic below might offer you a stronger sense of the sensor sizing in the A7R IV and A100.

As you can see, both cameras feature different resolutions and different sensor dimensions. The A7R IV featuring a larger sensor is going to make getting bokeh simpler and the Sony A7R IV will produce extra detail as a result of its extra 51MP. Greater resolution will also make it easier to crop images way more aggressively. The more modern A7R IV provides a benefit with regard to sensor innovation.